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Evidence of Increased Diversity of Methanogenic Archaea with Plant Extract Supplementation
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Evidence of Increased Diversity of Methanogenic Archaea with Plant Extract Supplementation
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Journal Article
Evidence of Increased Diversity of Methanogenic Archaea with Plant Extract Supplementation
2008
Overview
This study evaluated the effects of selected essential oils on archaeal communities using the ovine rumen model. Forty weaned Canadian Arcott ewes, fed with barley-based diet, were allotted to one of three essential oil supplementation treatments or a control (10 ewes per treatment) for 13 weeks. The treatments were cinnamaldehyde, garlic oil, juniper berry oil, and a control with no additive. Rumen content was sampled after slaughter and grouped by treatment by combining subsamples from each animal. DNA was extracted from the pooled samples and analyzed for methanogenic archaea using quantitative polymerase chain reaction, denaturing gradient gel electrophoresis, cloning, and sequencing. Our results suggest that the total copy number of archaeal 16S rRNA was not significantly affected by the treatments. The phylogenetic analysis indicated a trend toward an increased diversity of methanogenic archaea related to Methanosphaera stadtmanae, Methanobrevibacter smithii, and some uncultured groups with cinnamaldehyde, garlic, and juniper berry oil supplementation. The trends in the diversity of methanogenic archaea observed with the essential oil supplementation may have resulted from changes in associated protozoal species. Supplementation of ruminant diets with essential oils may alter the diversity of rumen methanogens without affecting the methanogenic capacity of the rumen.
Publisher
New York : Springer-Verlag,Springer Science + Business Media, Inc,Springer-Verlag,Springer,Springer Nature B.V
Subject
/ Animals
/ Archaea
/ Biological and medical sciences
/ Biomedical and Life Sciences
/ Cinnamomum zeylanicum - chemistry
/ Cloning
/ denaturing gradient gel electrophoresis
/ Diet
/ DNA
/ Ecology
/ ewes
/ Female
/ Fundamental and applied biological sciences. Psychology
/ Garlic
/ Geoecology/Natural Processes
/ Methanobacteriaceae - classification
/ Methanobacteriaceae - drug effects
/ Methanobacteriaceae - genetics
/ Methanobacteriaceae - growth & development
/ Oil
/ oils
/ PCR
/ Plant Oils - administration & dosage
/ RNA, Ribosomal, 16S - genetics
/ rRNA 16S
/ Rumen
/ Sheep
